condition	mean	min	max
4 h after light	17.4574	16.0742	18.8406
8 h after light	10.5519	10.4213	10.6825
12 h after light	8.96773	8.6125	9.32296
4 h after dark	15.4268	14.3241	17.0649
8 h after dark	16.82016666666667	16.0238	17.9735
12 h after dark	12.1982	10.673	13.8757